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MANCHESTER, UNITED KINGDOM - MAY 23: A British police officer escorts walking casualties away from the Manchester Arena stadium in Manchester, United Kingdom on May 23, 2017.  A large explosion was reported earlier in the evening and British police confirmed that at least 19 killed and many other wounded at American singer Ariana Grande concert at Manchester Arena. Police said earlier the blast at the 21,000-seat arena shortly before 10.35 p.m. (2135GMT) local time was being investigated as a terror attack. (Photo by Lindsey Parnaby/Anadolu Agency/Getty Images)
MANCHESTER, UNITED KINGDOM - MAY 23: A British police officer escorts walking casualties away from the Manchester Arena stadium in Manchester, United Kingdom on May 23, 2017.  A large explosion was reported earlier in the evening and British police confirmed that at least 19 killed and many other wounded at American singer Ariana Grande concert at Manchester Arena. Police said earlier the blast at the 21,000-seat arena shortly before 10.35 p.m. (2135GMT) local time was being investigated as a terror attack. (Photo by Lindsey Parnaby/Anadolu Agency/Getty Images)

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Witness: Horrible day for me now

Jessica Pierpoint came from Liverpool for a "meet and greet" with Ariana Grande before her performance in Manchester, England, but the teen says the day turned from a "dream come true to the worst nightmare."

Witness: Horrible day for me now

Jessica Pierpoint came from Liverpool for a "meet and greet" with Ariana Grande before her performance in Manchester, England, but the teen says the day turned from a "dream come true to the worst nightmare."